Screening machine



Sept. 28 1926. 1 ,601,207

. A J. FULLER SCREENING MACHINE Filed May 7, 1926 2 Sheets-Sheet 1 i INVENTOR.

ATTORNEY.

Sept. 28 1926. 1,601,207

A. J. FULLER SCREENING MACHINE Filed May '7, I926 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY.

Patented Sept. 28, 1926.

g entree stares 1,601,207 FATENT QEEHQE.

.eLvAn J. FULLER, or crirLnsnALn, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO FRANKM. POLLOCK, or CLEVELAND, OHIO.

SCREENING MACHINE.

Application filed May 7, 1926. Serial No. 107,321.

The present invention relates to screening machines, particularly such as may be employedin paper-makingpractice to screen and discharge from'the paper beater the materialof which paper is made; and its object is, generally, to provide, a machine of that character improved in various respects hereinafter appearing; and, more particularly, to provide such a machine having means for excluding. therefrom certain portions of said material or paper stock, for draining the liquid from the stock received by the machine, and for discharging such drained stock from the machine;

This, and any other and more specific objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the machine hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings,'in which:

Figure l is an axial sectional View of a screening machine taken on a vertical plane. corresponding to line l -1 of Figure 2; Figure 2 is an inner end View thereof; Figure 3 is an outer end view of the same, certain parts being sectioned vertically on 'line 33 of Figure 1;

Figure 4 is an axial sectional view of said machine taken on a horizontal'plane corresponding to line a d of Figure 1;

F igure' 5 is a transverse sectional. view of the same taken on a vertical plane corresponding to line 55 of Figure 4;

Figure 6 is a view in perspective of one of the vanes of the machine; and

Figure 7 is a top plan view of the vessel containing the beater of a paper-making. machine in connection with which my screening machine may be used.

In the accompanying drawings, a vessel 1 is shown containing the material or stock from which paper is made, such material in pulp form being carried circuitously in the vessel by the moving water therein. Means for breaking up the paper stock into smaller particles, i. e., a beater, is indicated at 2 in Figure 7 My screening machine is indicated at 8 in said view and comprises a hollow cylindrical element 4 mounted at 5, 6 rotatably about a horizontalaxis, and having circular ends 7 and screening sides 8.

I This element has a plurality of radiallyextending vanes within its screening sides 8, each of sald vanes compr slng a fluid-conduit 9 and an intake screen 10 therefora These vanes have portions llextending angular ly from said conduits to said screening sldes 8. A fixed trough 12 open at its top extends axially through the cylindrical element a, beneath its axle 13 and is inolmed downwardly to vent through its extens on 14: into a suitable discharge pipe 15 outside the vessel 1. Thebearings 5, 6 of the cylindrical element 1 are carried on oppositely disposed members 16 of a carriage vertically slidable in ways 22 on the upright extensions of the vessel 1 and having rack bars 17 with which mesh the gears 18 on a shaft 19 rotatably mounted on said upright extensions, the cylindrical element 4 being lowered into said vessel and raised therefrom by turning the gear 21 meshing with one of the gears 18. The conduits 9 discharge by vents '23 through the inner circular end 7 of the cylindrical element 4: lnto the vessel 1. The movement of the pulped paper stock carried by the water flowing circuitously in the vessel 1 and through the screening sides 8 of the cylindrical element t lowered thereinto, causes. smaller particles of the stock to pass into said element through its screening side, while particles too large to pass through said screening side travel in the moving water to the beater 2 to be further reduced in size. The particles of paper stock which have passed through the screening side 8 of said element, are with water carrying the same scooped by the portions 11 of the vanes in the rotation of the cylindrical element 4, and fall upon the screen 10 and the closed upper portion of the conduit which portion is adjacent the higher endoflthe trough 12. The water drains off from these particles of stock through the screen 10 and flows along the conduit 9 and out of its vent 23 into the vessel 1. lVhen the rotation of the cylindrical element 4 has inclined the screen 10 and the top portion 25 of the conduit 9 sufficiently, the particles of paper stock thereon slide therefrom and are dumped into the trough 12 whence they pass out of the machine and into the discharge pipe 15. The closed top portion 25 of the conduit 9 serves to retain in good degree the water from draining off from the particles of stock resting on said portion, so that when said particles thereon are dumped into the higher end of the trough 12, their moist condition causes them to readily flow and tiush out through said trough the dryer particles of stock dumped from the screen 10 into the troughs lower portion.

it will be seen that the cylindrical element -i may be rotated fast enough to cause the operations above described: that the water containing the pulped stock is. in greater part, returned to the vessel 1 while the screened particles of the stock are discharged from the machine and from said vessel: and tin t the machine may be raised out of the vessel 1 when desired, and may be lowered thereinto to the desired degree.

In assembling the parts, the ends of the ranes may be inserted between parallel lugs or extensions 30 projecting inwardly from the circular ends '7 of the cyliniilrical eemeat I, and such parts held together by bolts 31. N f

The invention, being intended to be pointed out in the claims, is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbe'fore described.

I claim:

1. In a machine of the character described: an axially-horizontal rotatable element having a radially-extending vane comprising a liquid-conduit and an intake screen therefor; a trough within said element positioned to receive matter dumped from the screen by said elements rotative movement.

2. In a machine of the character described: an ax-ially-horizontal rotatable hollow indrical elementhaving screening sides and containing a radiallyextending vane comprising a liquid-conduit and an intake screen therefor; a trough within said element positioned to receive matter dumped from the screen by said elements rot-ative movement.

3. In a machine of thecharacter described: an axially-horizontal rotatable hollow cylindrical element having screening sides and containing a radially- Xtending vane comprising a liquid-conduit venting from said element in its axial direction and an intake screen therefor; a trough extending in said element in its axial direction, venting therefrom, and positioned to receive matter dumped from the screen by said elements .rotative movement.

4. In a machine of the character described a vessel; an axially-horizontal rotatable hollow cylindrical element therein having screening sides and containing a radiallyextending vane comprising a liquid-conduit venting into the vessel and an intake screen for the conduit; a trough within said element, venting outside the vessel and positioned to receive matter dumped from the screen by said elements rotative movement.

5. In a machine of the character described: an axially-horizontal rotatable element having a radially-extending vane comprising a liquid-conduit having a closed upper portion extending a portion of its length and an open upper portion extending another portion of its length and provided with an in" take screen; a downwardly-inclined trough within said element positioned to receiv matter dumped from the screen and the conduits closed upper port-ion by said element". rotative movement, the higher end of thrtrough being adjacent the conduits close-'1 upper portion and its lower end adjacent the screen.

6. In a machine of the character described: a vessel; a carriage movable vertically in ways on the vessel; an zuLially-lnn'izontal element rotatably mounted on the carriage and having a radially-extemling vane comprising a liquidconduit and an intake screen therefor; a trough within said element venting outside the vessel and positioned to receive matter dumped from the screen by said elements rotative movement: means for raising and lowering the carriage.

T. In a machine of the character deseribcd a vessel; an open-top discharge pipe outsid the vessel; a carriage movable vertically in ways on the vessel: an axially-horizontal element rotatably mounted on the carriage and having a radially-extending vane comprising a liquidconduit and an intake screen therefor; a trough within said element venting into the discharge pipe and positioned to receive matter dumped from the screen by said .elements rotative movement: means for raising and lowering the carriage.

In testimony whereof I have hereunto set my hand at Grand Rapids, Michigan, this 23rd day of April, 1926.

ALVAH J. FULLER. 

